Comparison

Occluder vs Interactive Chess Books

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Occluder

Features
Read full description

***** INTRODUCTORY PRICE ***** The perfect app to practice and learn about oculomotor pathologies. A useful tool to practice diagnosis of ocular pathologies related to external eye muscles with the Cover Test. You can simulate an specific Phoria or Tropia. Test yourself with Occluder! You can practice Cover/Uncover test with the following pathologies: 1. Near and distant phorias 2. Near and distant tropias We will soon include more pathologies To become our tester send a mail to occluderapp@gmail.com

About

Interactive Chess Books

This app offers interactive lessons, tutorials, and practice exercises to help beginners and intermediate players improve their chess skills. It features a user-friendly interface with clear instructions, helpful tips, and engaging challenges to make learning fun and effective.

Highlights
  • Interactive lessons
  • Tutorials
  • Practice exercises
  • User-friendly interface
  • Helpful tips and tricks
  • Engaging challenges and quizzes
Features
Read full description

Welcome to my chess instruction mobile app, the perfect tool for both beginner and intermediate chess players who want to improve their skills and take their game to the next level. Chess is a game that has fascinated people for centuries, and with the advent of modern technology, it has never been easier to learn and play the game. My app is designed to provide a comprehensive and interactive learning experience that covers all aspects of the game, from the basics of chess rules and strategies to advanced techniques used by experienced players. Whether you are a beginner who is just starting to learn the game or an intermediate player who wants to sharpen your skills, my app provides a range of features to help you improve your game. From interactive lessons and tutorials to practice exercises, my app has everything you need to take your chess skills to the next level. I have designed my app with a user-friendly interface that makes it easy to navigate and use, regardless of your experience level. With clear and concise instructions, helpful tips and tricks, and engaging challenges and quizzes, my app provides a fun and interactive way to learn and master the game of chess. So whether you want to learn the game from scratch or improve your existing skills, my chess instruction mobile app is the perfect companion to help you achieve your goals. Download it today and take the first step towards becoming a better chess player!

Screenshots

Occluder1 screens
Interactive Chess Books4 screens

Verdict

The call

The clearest difference is price: Interactive Chess Books at Free against Occluder's $0.99. Interactive Chess Books also leads on update cadence (every 4 months vs every 51 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Interactive Chess Books is free to download; Occluder costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Occluder ships an update every 51 months, Interactive Chess Books every 4 months. Both last shipped on October 7, 2026.

Scorecard2 real differences · 8 level
Occluder versus Interactive Chess Books: the parameters behind the verdict, then further details
ParameterOccluderInteractive Chess Books
Price$0.99Free — better
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 51 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.6 — better16.4
Further details — not scored
Size2 MB34 MB
Age rating4+4+
DeveloperIvan Cabezon OrjalesEric Tangborn

In-app purchases

None

Occluder

No in-app purchases

None

Interactive Chess Books

No in-app purchases

Questions

Is Occluder free?
Occluder costs $0.99, with no in-app purchases.
Is Interactive Chess Books free?
Interactive Chess Books is free to download, with no in-app purchases.
Do Occluder or Interactive Chess Books have ads?
Neither Occluder nor Interactive Chess Books shows ads.
Which is updated more often, Occluder or Interactive Chess Books?
Occluder ships an update every 51 months, and Interactive Chess Books every 4 months. Most recently, Occluder was updated on October 7, 2026 and Interactive Chess Books on October 7, 2026.

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